COLOMBO (Agencies) - Pakistan captain Shahid Afridi is not rejoicing too much despite the "big win" over Sri Lanka in a World Cup match as he is worried and baffled by the mistakes his team committed, especially in the fielding department. "I think when we go ahead in this tournament our destination will get tougher and tougher and if we commit the same mistakes, we will return to Pakistan very soon. We must improve," Afridi said after the 11-run win in a thrilling Group A encounter on Saturday night. Pakistan spilled catches and missed run-out and stumping chances in a fumbling fielding display that could have cost them dearly. And Afridi minced no words in pointing out the mistakes after the narrow win. "Our fielding has been improving since the New Zealand tour, but I don't know why in this match we dropped catches and failed to take run-out chances," said the skipper, who was named man of the match for picking up four wickets which took his overall tally to 300. Despite the shortcomings highlighted in the match, Afridi said it was nonetheless a big win for his team. "It's a very big win for us, beating Sri Lanka before a capacity crowd, their own people and a strong team which has been playing very well recently," Afridi said. Afridi was all praise for seniors Younus Khan and Misbah-ul-Haq for their crucial fifties which helped Pakistan post a challenging 277 on the board. "I'm happy that seniors have taken responsibility. Younus and Misbah are the backbone of the team, and it's important that the captain performs well as it sets an example for others," he said. Pakistan next face minnows Canada on March 3 and Afridi said the match is as important as any other game of the event. "I will sit down and plan, I will take advice from my coach and from my senior players as it is everyone's team," Afridi said. "Winning is very important for us, it is a good habit and we should try to win every match and play hard with our strength. I think we will give rest to some of our players but definitely we want to win each and every game," he added. Meanwhile, buoyed by an 11-run victory over co-host Sri Lanka, Pakistan captain Shahid Afridi reckons his side are now firmly among the title contenders at the World Cup. Asked whether his team deserved to be considered among the favourites after victory in Colombo, Afridi said: "Definitely, Inshallah (God willing)." Afridi's change in tone about his side's World Cup prospects is a noticeable one. Prior to the opening match in Hambantota against Kenya, which Pakistan won by 205 runs, he would only describe his side as a "dangerous" team at the tournament, let alone being a dark horse for the trophy. The Pakistan skipper did have a word of criticism for his fielders, who dropped several catches, squandered run out opportunities and watched wicketkeeper Kamran Akmal fumble two chances to stump Sri Lanka captain Kumar Sangakkara on Saturday. But a narrow win in front of 35,000 noisy home team supporters, and a total of four points from two games after trouncing Kenya, has raised Afridi's expectations as his team starts to build momentum. "Sri Lanka has been playing well recently and I think this will raise the morale of players and help us prepare in a better way," he predicted. "Winning is a good habit." Saturday was a particularly good day at the office for the Pakistan skipper, whose return of 4/34 saw him pass the milestone of 300 wickets in one-day internationals. He also became only the second all-rounder after Sri Lanka's Sanath Jayasuriya to complete a double of over 6,000 runs and 300 wickets in limited-overs cricket. As a team, Pakistan has clearly shown signs of improvement since Afridi took over as captain of the one-day and Twenty20 sides last year. Although it failed to qualify for the final of Asia Cup and lost one-day series against both England and South Africa, Pakistan completed a 3-2 series victory in New Zealand earlier this month - its first since defeating West Indies in November 2008. In the more immediate term, Saturday's victory means Pakistan should finish among the top three in Group A with matches against weaker sides Zimbabwe and Canada to follow. New Zealand and defending champion Australia are the other sides in the group, with four teams advancing to the knockout stages. Among the recent improvements to Pakistan's game is the once suspect batting line-up, which has delivered scores of 317 and 277 respectively in the two matches so far. Test captain Misbah-ul-Haq and former captain Younus Khan both scored solid half centuries against Kenya and Sri Lanka. Misbah and Khan's ability to rotate the strike and score around five runs an over not only moves Pakistan's totget only three to four overs at the end of the innings in which we have to score at a fast pace and there are chances that you get dismissed." The results are there for all to see, Afridi's decision to pack his playing XI with three specialist bowlers and three batting all-rounders - Hafeez, Abdul Razzaq and himself - has not gone down well with critics. Former captain Imran Khan and Wasim Akram want Pakistan to play with at least four specialist bowlers, fearing the all-rounder might not come good against strong opponents. Razzaq, who is only No. 8 in the batting order, has had the new ball in both games to date but only bowled five overs in each - without taking a wicket. However, Afridi backed his all-rounder. "Razzaq can win us matches single-handedly and I am confident whenever such a situation arises he can play a winning role," Afridi said.